Lightweight chair



FIG. 1 is a side view of the lightweight chair of the invention;

FIG. 2 is a top perspective view of the chair illustrated in FIG. 1;

FIG. 3 is a front view of the chair illustrated in FIG. 1;

FIG. 4 is a back view of the chair illustrated in FIG. 1; and,

FIG. 5 is a bottom perspective view of the chair illustrated in FIG. 1.

The ornamental design for a lightweight chair, as shown and described.